Acoustical breakdown of materials by focusing of laser-generated Rayleigh surface waves
Name
Achirving APL Focusing SAW.pdf
Size
1.46 MB
Format
Adobe PDF
Checksum (MD5)
53ee5ed18d5571b33305954a913ed85e
Author(s)
Veres, István A.
Lomonosov, Alexey M.
Veysset, David Georges
Maznev, Alexei
Pezeril, Thomas
Kooi, Steven E
Nelson, Keith Adam
Date Issued
July 2017
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Veysset, David, A. A. Maznev, István A. Veres, Thomas Pezeril, Steven E. Kooi, Alexey M. Lomonosov, and Keith A. Nelson. “Acoustical Breakdown of Materials by Focusing of Laser-Generated Rayleigh Surface Waves.” Applied Physics Letters 111, no. 3 (July 17, 2017): 031901.
Version
Author's final manuscript
Abstract
Focusing of high-amplitude surface acoustic waves leading to material damage is visualized in an all-optical experiment. The optical setup includes a lens and an axicon that focuses an intense picosecond excitation pulse into a ring-shaped pattern at the surface of a gold-coated glass substrate. Optical excitation induces a surface acoustic wave (SAW) that propagates in the plane of the sample and converges toward the center. The evolution of the SAW profile is monitored using interferometry with a femtosecond probe pulse at variable time delays. The quantitative analysis of the full-field images provides direct information about the surface displacement profiles, which are compared to calculations. The high stress at the focal point leads to the removal of the gold coating and, at higher excitation energies, to damage of the glass substrate. The results open the prospect for testing material strength on the microscale using laser-generated SAWs.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Chemistry
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1063/1.4993586
